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Navarro came through the youth system at Barcelona before moving to Espanyol at just 16 years of age.

He made his debut in January 2017, and went on the make 36 appearances in La Liga last term.

It wasn't a signing that many were expecting, with most awaiting news on the pusuit of Adam Mesina.

According to Sky Sports, The Hornets are thought to be close to agreeing a deal for the Bologna defender, but it remains to be seen whether the arrival of Navarro signals the end of Watford's interest.

Such was the surprise among the Watford fans, many expressed their shock at the unexpected arrival.